cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A263750 Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and every three consecutive elements having its maximum within 5 of its minimum.

Table of values

n a(n)
1 1
2 2
3 6
4 24
5 120
6 720
7 2400
8 3552
9 5484
10 12058
11 31071
12 89930
13 254500
14 679392
15 1715416
16 4161848
17 10094156
18 25238028
19 64373668
20 165154496
21 422763792
22 1073730708
23 2707289996
24 6816577516
25 17195493048
26 43486842456
27 110189391196
28 279316518708

List of values

[1, 2, 6, 24, 120, 720, 2400, 3552, 5484, 12058, 31071, 89930, 254500, 679392, 1715416, 4161848, 10094156, 25238028, 64373668, 165154496, 422763792, 1073730708, 2707289996, 6816577516, 17195493048, 43486842456, 110189391196, 279316518708]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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